20872410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:623

約数の個数: 64

約数和(自身を含む): 54552960

約数和(自身を除く): 33680550

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 109, 130, 195, 218, 327, 390, 491, 545, 654, 982, 1090, 1417, 1473, 1635, 2455, 2834, 2946, 3270, 4251, 4910, 6383, 7085, 7365, 8502, 12766, 14170, 14730, 19149, 21255, 31915, 38298, 42510, 53519, 63830, 95745, 107038, 160557, 191490, 267595, 321114, 535190, 695747, 802785, 1391494, 1605570, 2087241, 3478735, 4174482, 6957470, 10436205, 20872410]

約数ペア:

[(1, 20872410), (2, 10436205), (3, 6957470), (5, 4174482), (6, 3478735), (10, 2087241), (13, 1605570), (15, 1391494), (26, 802785), (30, 695747), (39, 535190), (65, 321114), (78, 267595), (109, 191490), (130, 160557), (195, 107038), (218, 95745), (327, 63830), (390, 53519), (491, 42510), (545, 38298), (654, 31915), (982, 21255), (1090, 19149), (1417, 14730), (1473, 14170), (1635, 12766), (2455, 8502), (2834, 7365), (2946, 7085), (3270, 6383), (4251, 4910)]